Herein, we developed a flexible and high-energy dense, solid-state supercapacitor with a yarn-like geometry. In our approach, conductive Ni was sputtered on oxidized carbon nanotubes-coated cotton yarn templates, which were directly used as functional electrodes to construct the supercapacitor. The as-prepared device offered a remarkable specific capacitance of 258.47 mF/cm² and a superior energy density of 51.7 μWh/cm². The device retained long-term cyclic stability after 5000 cycles of use, with a negligible reduction of electrochemical performance observed under severe bending states. The functional device has great potential to be embedded as a high-performing storage device for versatile miniaturized electronics.

本文中，我们开发了一种具有纱线状几何形状的柔性高能致密固态超级电容器。在我们的方法中，将导电镍溅射在氧化碳纳米管涂层棉纱模板上，该模板直接用作功能电极来构造超级电容器。所制备的设备提供的258.47 MF / cm的显着的比电容²和51.7μWh/ cm的较高的能量密度²。该设备在使用5000次循环后仍保持长期的循环稳定性，在严重的弯曲状态下电化学性能的降低可忽略不计。该功能设备具有很大的潜力，可以作为多功能微型电子设备的高性能存储设备来嵌入。